Arch.



Nm 693,280; Patented Feb. |902. L. LANE.

ARC-H:-

(App1ica.tion filed Oct. 28, 1901.) Y

(No Model.) A A- 2-Sheet's-Sheet I.

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A 770mm YS.

v.Patented Feb. Il, |902. L. LANE. I

. ARCH..

(Applicatio filed Oct. 28, 19.01.)

2 sheets-sheet 2. Y

(No Model.)

/N VEA/mf? lamb am? W/TNESSES:

ATTORNEYS UNITED STATES PATENT OFFICE.

LOUIS LANE, OF TOLEDO, OHIO.

ARCH.

sPEcIFIcA'rIoN forming part of Letters Patent No. 693,280, datedFebruary 11 1902'.

Appncrrionnealcriober2s,1901. serian. $0,273. (nomas.) l

To tu whom t may concern:

Be it known that I,LOUIS LANE, a citizen of the United States, and aresident of Toledo, in the county of Lucas and State of Ohio, haveinvented anew and Improved Arch, of which -the following is a full,clear, and exact description.

This invention relates to improvements in the construction of small archbridges, culverts, and the like, the obj ect being to provide an archfor such structures of simple construction, easy to build, durable, andcheap.

I will describe an arch embodying my invention and then point ontthenovel features in the' appended claims.

Reference is to be hadto the accompanying drawings, forminga part ofthis speciiication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional elevation of an archl embodying my invention.kFig. 2 is a sectional elevation showing amodification. Fig. Bis asectional detail showing a form of key vernployed in the structurev`illustrated in Fig.l 2, and Fig. 4 is a section on the line'x of Fig. 3.

Referring to the drawings, 1 designates the abutments, on the upperportions of which are placed the angle-irons or skewback-bearings 2 toreceive the ends ofthe arch-plates 3. In the construction of the archdowels 4 may be placed inthe material :rearward of the angle-irons, soas to prevent any possible displacement of the angle-irons during suchconstruction.` The plates 3 are of any suitable thickness, and toprovide for a considerable strength with a comparative lightness of aplate or plates the said plate or platesarecorrurgated from sideptoside`that is, in the direction of .their curve. After-placing the plateor plates 3 the arch ring 5 isplaced in position, this arch rin gconsisting of concrete, and between the concrete and the plate orplatesa rich mortar isused, the metal and concrete being Vstructurallyunited by reason of the well-known propertyfof adhesionof cement toiron, and forms a compounded struc- -ture of` great strength andefficiency. The

metal also being on the under exposed side forms a shell to protect theconcrete from the elements or from other injury. The metal arch I preferto have a rise of approximately onefourth its span and is one that maybe of the socalled lineal-archi form. By thus propor tioning andemploying thev metal arch-plates I save vthe trouble and expense oftemporary 5 5 centering, which has rendered the use of such archesimpractical in many localities, owing to the great diversity of lsizeand proportions.

In Fig. l I have lshown the arch-,plate as made in one length from'sideto side, and this is used where a limit ofjone hundred and twenty inchesfor Vsuch sheets will permit it. Where the span exceeds this, I overcomethe diiiculty by a special construction, as illustrated in Fig. 2, v l

l In Fig. 2 I show the arch as comprising two corrugated plates 6 and 7,which at their upper ends connect with a key comprising a bar 8, havingiianges 9 10 at the upper and lower sides, which project to engage theupper and lower surfaces of the arch-plates, these plates 9 and. l0beingbolted to the bar 8, as clearly shown in the drawings. Having thusdescribed my invention, I clai-mas new and desire to secure by LettersPatent v j 1.1' An arch,comprisingabutmentsbearingirons on saidabntments, dowels with which the rear sides of the irons engage, anarchplate mounted on said bearing-irons, the said plate being corrugatedin the direction of its curve, and a concrete-arch ring, substantiallyas specified.

2. An arch, comprising abutments archplates resting on the abutments andextended at their upper ends to the lcenter of the arch, and a keyconnection between said upper ends, and engaging with theupper andunger1 sides of the plates, substantially as specie( a v 3. 4An arch,comprising abutments, archplatesspringing from' said abutments, the4said plates being 'corrugated in the direction f of their curve, akey-bar arranged between the upper ends of the plates, and plates se- 95cured to said bar and engaging against the upper and under surfaces ofthe arch-plates, substantially as specified.

In testimony whereof I yhave signed my name to this specification in thepresence of roo two subscribing witnesses.

i LOUIS LANE.

Witnesses:

ROY GARFIELD LANE, MYTLE E. FASHBAUGH.

